Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf63a21a4847a286…

MALICIOUS

PDF

34.9 KB Created: 2021-06-21 01:27:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d87fb9515d0cd39c37e21a6be61a4c03 SHA-1: 52713f687e8ebb85ab4333dec011959546d5eeb1 SHA-256: bf63a21a4847a28665513e5f22dd4a8b046f56c04f5ea71b752c62b330da7265
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary lure related to 'hacks para Roblox para conseguir Robux'. The ML classifier strongly flagged this PDF as malicious, and heuristics indicate it links to a game hack redirector. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect the user to a site that may host malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.co/app/431946152/hacks-para-roblox-para-conseguir-robux-game-hack PDF link annotation
    • http://jandimotors.co.uk/images/coin-master-free-coins-amp_GM406889139.pdfIn PDF document text
    • http://jandimotors.co.uk/images/como-conseguir-robux-con-hacks_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/coin-master-free-spin-and-coin-link-app_GM406889139.pdfIn PDF document text
    • http://jandimotors.co.uk/images/how-to-get-free-stuff-on-roblox-2021-on-phone_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://jandimotors.co.uk/images/what-games-give-you-robux_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/how-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/free-coin-master-gold-cards_GM406889139.pdfIn PDF document text
    • http://jandimotors.co.uk/images/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://jandimotors.co.uk/images/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://jandimotors.co.uk/images/aimbot-download-roblox_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://jandimotors.co.uk/images/coin-master-game-hacking_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE2 22888 bytes
SHA-256: 8e0ec8514a911a1da929be91f44820371a8b22f061b46bbd73e990fe2e5702e7
font_01_sfnt_off00006331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6331 19068 bytes
SHA-256: 6b73714c48beaa1f1befe2467adcbcff4ee4b85a24de7350bf9b3de6bf346d9e

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